import java.util.Scanner;

public class q1 {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        System.out.println("身高(单位,m");
        double height = sc.nextDouble();
        System.out.println("体重(单位,kg");
        double weight = sc.nextDouble();
        double bmi = weight/(height*height);
        System.out.println("BMI:"+bmi);
        if(bmi<18.5){
            System.out.println("偏瘦");
        }else if(bmi<25){
            System.out.println("正常");
        }else if(bmi<28){
            System.out.println("稍微超重");
        }else if(bmi<32){
            System.out.println("超重");
        }else{
            System.out.println(" severely obese");
        }



    }
}


